#include <iostream>

using namespace std;

int q[100][100];

int main() {
    int n;
    while (cin >> n, n) {
        for (int i = 0; i < n; i++) {
            q[i][i] = 1;
            for (int j = i + 1, k = 2; j < n; j++, k++) {
                q[i][j] = k;
            }
            for (int j = i + 1, k = 2; j < n; j++, k++) {
                q[j][i] = k;
            }
        }

        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                cout << q[i][j] << ' ';
            }
            cout << endl;
        }
        cout << endl;
    }

    return 0;
}
